You can unlock Accomplishment Trophy's by playing in certain games. Here is a list of the trophy's that you can unlock along with the games that you will need to play to unlock them:

AT&T Bowl Trophy - Win the AT&T BowlBack-to-Back National Champs Trophy - Win consecutive national championshipsBCS National Champ. Trophy - Rank first in college footballBig East Champ. Trophy - Win the most games in the Big EastC-USA Champ. Trophy - Win the most games in the C-USACapital One Bowl Trophy - Win the Capital One BowlChick-Fil-A Bowl Trophy - Win the Chick-Fil-A BowlDavey O'Brien Trophy - Have the top-rated QBDoak Walker RB Trophy - Have the top-rated RBGator Bowl Trophy - Win the Gator BowlGMAC Bowl Trophy - Win the GMAC BowlHawaii Bowl Trophy - Win the Hawaii BowlHeisman Memorial Trophy - Have the best player in the NCAAHoliday Bowl Trophy - Win the Holiday BowlIndependence Bowl Trophy - Win the Independence BowlInsight Bowl Trophy - Win the Insight BowlJim Thorpe Trophy - Have the top-rated defensive backLas Vegas Bowl Trophy - Win the Las Vegas BowlMAC Championship Trophy - Win the most games in the MACMaxwell Trophy - Win "College Player of the Year"Meineke Car Care Bowl Trophy - Win the Meineke BowlMotor City Bowl Trophy - Win the Motor City BowlMWC Championship Trophy - Win the most games in the MWCNew Orleans Bowl Trophy - Win the New Orleans BowlOrange Bowl Trophy - Win the Orange BowlReceiver of the Year Trophy - Have the top-rated WRSEC Championship Trophy - Win the most games in the SECSugar Bowl Trophy - Win the Sugar BowlSun Belt Championship Trophy - Win the most games in the SBCThree-In-A-Row National Champs Trophy - Win back-to-back-to-back national championshipsTight End of the Year Trophy - Have the top-rated TEWAC Championship Trophy - Win the most games in the WAC